Since you are creating a square matrix of points, try this
In[1]:= data=Table[x^2+y^2, {x,0,1,0.1}, {y,0,1,0.1}];
ListContourPlot[data]
Out[2]=
That generates a contour plot for me, although it uses integer increments for the axes tick labelling.
Perhaps you can experiment to see how to go from there.